openSUSE

In short: openSUSE is the community distribution of SUSE, a company with German roots.

In more detail: There are Leap (stable version) and Tumbleweed (rolling release).

In Depth

Details

Management tools: YaST and zypper (RPM). Considered good for developers and admins. See SUSE Linux Enterprise, Fedora.

See also: Linux, Debian, Ubuntu, Fedora